1.获取客户端ip地址( 这个必须从客户端传到后台):
jsp页面下,很简单,request.getRemoteAddr() ;
因为系统的VIew层是用JSF来实现的,因此页面上没法直接获得类似request,在bean里做了个强制转换
public String getMyIP() { try { FacesContext fc = FacesContext.getCurrentInstance(); HttpServletRequest request = (HttpServletRequest)fc.getExternalContext().getRequest(); return request.getRemoteAddr(); } catch (Exception e) { e.printStackTrace(); } return ""; }
2.获取客户端mac地址
调用window的命令,在后台Bean里实现 通过ip来获取mac地址。方法如下:
public String getMACAddress(String ip){ String str = ""; String macAddress = ""; try { Process p = Runtime.getRuntime().exec("nbtstat -A " + ip); InputStreamReader ir = new InputStreamReader(p.getInputStream()); LineNumberReader input = new LineNumberReader(ir); for (int i = 1; i < 100; i++) { str = input.readLine(); if (str != null) { if (str.indexOf("MAC Address") > 1) { macAddress = str.substring(str.indexOf("MAC Address") + 14, str.length()); break; } } } } catch (IOException e) { e.printStackTrace(System.out); } return macAddress; }
补充:
关于获取IP地址的方式,最近在linux下有一个教训,如果单纯通过InetAddress来获取IP地址,就会出现在不同的机器上IP地址不同的问题。
InetAddress.getLocalHost().getAddress() 实际上是根据hostname来获取IP地址的。linux系统在刚刚装完默认的hostname是localhost,所以通过上面代码获取到的本机ip就是127.0.0.1, 相对应,比如我的hostname就是rjlin.atsig.com 返回的ip地址确是atsig.com的地址。暂时采用下面代码来处理,当然还不够灵活:
public static byte[] getIp() throws UnknownHostException { byte[] b = InetAddress.getLocalHost().getAddress(); Enumeration allNetInterfaces = null; try { allNetInterfaces = NetworkInterface.getNetworkInterfaces(); } catch (SocketException e) { e.printStackTrace(); } InetAddress ip = null; NetworkInterface netInterface = null; while (allNetInterfaces.hasMoreElements()) { netInterface = (NetworkInterface) allNetInterfaces.nextElement(); if (netInterface.getName().trim().equals("eth0")){ Enumeration addresses = netInterface.getInetAddresses(); while (addresses.hasMoreElements()) { ip = (InetAddress) addresses.nextElement(); } break; } } if (ip != null && ip instanceof Inet4Address) { return b = ip.getAddress(); } return b; }